Journal Club Theme of June 2015: Gradient structures for optimal mechanical design
The outmost surface of engineering materials typically faces the most severe risk of damage. When such boundary conditions are given, employment of graded structures is desired to enhance the safety of the structure in an economic way [1]. Mechanically, adopted gradient structures typically involves change in Young’s modulus or strength, and are beneficial to crack shielding, reducing stress concentration, retarding shear localization, etc.